Company Overview: WTF Gyms is at the forefront of fitness innovation, integrating cutting-edge technology into the gym experience. Our extensive backend system is built on Node.js and PostgreSQL, supporting a wide range of services and applications that drive the operations of our gyms. We are seeking a highly skilled and experienced Senior Node.js Backend Developer to join our team, working under the guidance of our senior engineer. If you are passionate about building scalable, secure, and high-performance systems, this role is for you.
Job Description:
As a Senior Node.js Backend Developer at WTF Gyms, you will be responsible for managing and expanding our backend system. You will work on designing, developing, and optimizing APIs, microservices, and database interactions to ensure the smooth operation of our platform. Your role will involve deep technical expertise in Node.js, PostgreSQL, and advanced backend architecture. You will also be expected to mentor junior developers and contribute to the overall system architecture.
Key Responsibilities:
Node.js Development:
- Design, develop, and maintain highly scalable and performant backend services using Node.js.
- Implement robust error handling, memory management, and asynchronous programming patterns.
- Develop and optimize RESTful APIs, ensuring they meet the highest standards of performance and scalability.
- Utilize Node.js streams for efficient data processing, especially in real-time applications.
PostgreSQL Database Management:
- Efficiently manage PostgreSQL databases, including schema design, query optimization, and indexing.
- Write complex SQL queries and optimize them for performance, particularly in high-load environments.
- Handle advanced PostgreSQL features like JSONB, full-text search, and Common Table Expressions (CTEs).
- Implement and manage database connection pooling, transactions, and concurrency controls.
Backend Architecture & Microservices:
- Design and implement microservices architecture, ensuring services are decoupled, scalable, and maintainable.
- Implement advanced caching strategies, including distributed caching systems, to optimize performance.
- Utilize containerization technologies like Docker for deploying and scaling microservices.
- Work with service meshes (e.g., Istio) to manage microservices communication and observability.
Real-Time Data Handling:
- Develop real-time features using WebSockets or Socket.io for live updates and notifications.
- Handle large datasets and streaming data efficiently using Node.js streams.
Performance Optimization:
- Profile and optimize Node.js applications to identify and resolve bottlenecks.
- Implement advanced load balancing strategies and optimize long-running tasks using worker threads or child processes.
- Utilize advanced caching techniques to reduce database load and improve response times.
Security Best Practices:
- Implement OWASP Top Ten security practices in Node.js applications.
- Secure APIs and database interactions, ensuring data protection and integrity.
- Develop role-based access control (RBAC) mechanisms and implement secure authentication and authorization protocols.
Testing & Quality Assurance:
- Write unit and integration tests using frameworks like Mocha, Jest, or Chai.
- Implement end-to-end testing to ensure the seamless operation of the Node.js application with PostgreSQL.
- Adopt test-driven development (TDD) practices to ensure code reliability.
Advanced Logging & Monitoring:
- Set up structured logging with tools like Winston or Bunyan, integrated with centralized logging systems.
- Implement comprehensive monitoring systems (e.g., New Relic, Prometheus) to track application performance and detect issues early.
Continuous Integration/Continuous Deployment (CI/CD):
- Develop and manage CI/CD pipelines for automated testing, building, and deployment.
- Implement zero-downtime deployment strategies, such as blue-green deployments and canary releases.
Advanced Error Tracking & Debugging:
- Utilize distributed tracing (e.g., OpenTelemetry) to troubleshoot complex performance issues in microservices.
- Detect and resolve memory leaks and other performance-related issues in Node.js applications.
Event-Driven Architecture & Messaging:
- Design and implement event-driven architectures using message queues (e.g., RabbitMQ, Kafka).
- Implement event sourcing patterns for auditability and state reconstruction.
Collaboration & Code Management:
- Collaborate with cross-functional teams, including front-end developers, DevOps, and product managers.
- Maintain a clean and structured codebase using Git, following best practices in version control.
- Mentor junior developers and contribute to code reviews and architectural decisions.
Soft Skills:
- Strong problem-solving skills with the ability to diagnose complex issues in a large codebase.
- Excellent communication skills, capable of articulating technical concepts clearly to both technical and non-technical stakeholders.
Qualifications:
- Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.
- 5+ years of experience in Node.js development, with a strong portfolio of backend projects.
- Deep expertise in PostgreSQL and its integration with Node.js applications.
- Proven track record of working on large-scale, high-performance systems.
Preferred Skills:
- Experience with containerization and orchestration tools like Docker and Kubernetes.
- Familiarity with serverless architecture and cloud services (AWS, GCP, or Azure).
- Knowledge of advanced database techniques such as sharding and partitioning.
Why Join Us?
Flexible work arrangements, including remote work options.
Opportunity to work on a cutting-edge platform that’s transforming the fitness industry.
Collaborative work environment with a focus on innovation and continuous learning.
Competitive salary and benefits package.
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